According to an affidavit of probable cause, Krebs was on duty and monitoring traffic at Route 209 and Bull Run Street at 11:30 p.m. Dec. 9, 2011, when he saw a green Chrysler van heading east on Route 209. The van turned onto Bull Run Street without activating a turn signal, and made such a wide turn it went into the opposing lane and almost drove up an embankment.

Krebs was about to follow the van when the driver of a vehicle traveling behind it flagged him down and told him the van was "all over the roadway and driving mostly in the opposite lane of travel."

Krebs saw the van park in front of 3 Bull Run Street, almost striking a large flower pot in front of the house. He activated his emergency lights and stopped the van. The driver was identified as Watkins.

Krebs had Watkins perform field sobriety tests, and arrested him on suspicion of DUI.

Watkins admitted to having used heroin earlier in the day, and had a needle in his right front pocket and two bags of heroin in his wallet in addition to several empty bags. Watkins was taken to St. Luke's Miners Memorial Hospital, Coaldale, where Officer Nothstine of the Walnutport Police Department, a drug recognition expert, performed an evaluation.